Walking-beam.



H. SHANNON. WALKING BEAM. APPLICATION FILED AUG. 22, 1907.

Patented Mar. 9, 1909.

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HEZEKIAH SHANNON, OF CYCLONE, PENNSYLVANIA.

WALKING-BE AM.

Application filed August 22, 1907.

Specification of Letters Patent.

Patented March 9, 1909.

Serial No. 389,751.

T 0 all whom it may concern:

Be it known that I, Hnzunmn SHANNON while at the left hand there is onlyone of these bars. Truss-bars 12 and 13 are pro- I u a o v o I a citizenof the United States, resldlng at vided wlth a central horizontalportion 17 Cyclone, in the county of lvicKean and State of Pennsylvania,have invented certain new and useful Improvements in Walking-Beams, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

My invention relates to improvements in walking beams, and pertains moreparticularly to oil well drilling machines.

The object of my invention is to provide a walking beam of thischaracter constructed of sections-of pipe so arranged that a more simplecheap and durable walking beam is produced.

In the accompanying drawings, Figure 1 is a side elevation of myimproved walking beam mounted upon a standard or standards and showingan operating pitman connected thereto. Fig. 2 is a perspective view ofthe walking beam. Fig. 3 is a vertical transverse sectional view takenon the line {IF-50 of Fig. 1. Fig. 1, is a top plan view of the workingbeam showing the central portion broken away.

Referring now to the drawings 1 represents the base upon which aremounted the vertical standards 2 carrying at their upper ends thejournal boxes 3. In order to operate the walking beam 1 provide a pitman7 which may be operated by any desired means. The said walking beamconsists of two horizontal sections of pipe 8 and 9 spaced a properdistance apart and held in said position by transverse bars 10 and 11.Below the sections of pipe 8 and 9 are two parallel truss pipes 12 and13 which have their outer ends 14- parallel with the outer ends of thepipes 8 and 9 and abutting against the same. Passing vertically throughthe ends of the pipes S and 9, and the ends 14 of the truss pipes 12 and13, are bolts 15 the purpose of which is to prevent the wearing on thepipes 8 and 9. The lower ends of said bolts pass through transverse bars16, and carried by the lower ends of the bolts are nut-s by means ofwhich the pipes and the bars are securely clamped together. Thetransverse bars 16 hold the pipe section the proper distance apart andthus form an elongated truss-frame. The walking beam as shown in Fig. 2is provided with three transverse bars 16 at the right hand end 1 l l li l l 1 below which is a flat horizontal plate 18. Passing upwardlythrough the plate 18 and through the horizontal portion 17 of thetruss-bar are four bolts 19 which also pass up through the pipes 8 and9. Surrounding the bolts 19 between the truss-bars 12 and 13 and thepipes 8 and 9 are sleeves 20. These sleeves as shown are formed ofsections of pipe and have their upper and lower ends restingrespectively against the truss-bars and the pipe. Tie said bolts 19 passupwardly through the transverse brace-bar 10 and also pass through theoblique brace-bars 21 and 22. Carried by the upper end of the bolts arenuts 23 by means of which the truss-bars and pipes are firmly clampedtogether. The sides of the horizontal plate 18 are provided withtrunnions 2% which are nounted in the journal boxes 3 and by means ofwhich the walking beam is rocked. The upper face of the pipes 8 and 9are provided with oppositely arranged recesses 25 in which is mountedthe stirrup 26 the lower end of the stirrup being connected with thepitman 7. In order to hold the said stirrup in the recesses I provide aplate 27, resting upon the upper faces of the beams 8 and 9 and which isfirmly clamped thereon by means of a T-bolt 28 which has its lower end29 turned outwardly and upwardly around the lower face of the truss-bars12 and 13. The opposite end of the walking beam is provided withrecesses 30 in which is mounted the polish-rod adjuster 31 which may beof any well known form now in use. In order to hold said polish-rodadjuster in the recesses I provide a plate 32 similar to plate 27 andsecured to the walking beam in the same manner by the T-bolt 33.

3y the construction herein shown and described it will be seen that Ihave produced a simple, cheap and effective walking beam in which anypart can be readily replaced should it become broken or the parts can beinterchanged as desired.

Having thus described my invention what I claim and desire to secure byLetters Patent. is V 1. A walking beam comprising two parallel pipes,truss-bars below said pipes, bolts passing through sleeves on the boltsbetween the pipes and said pipes and truss-bars,

' nions carried by truss-bars, a plate secured to the lower face of thetruss-bars by said bolts, and trun the said plate.

2. A walking beam comprising two parallel pipes, truss-bars below saidpipes, bolts passing through the pipes and trussbars, sleeves on thebolts bet-ween the pipes and truss-bars, a plate secured to saidtruss-bars by the said bolts, trunnions carried by the said plate, apolishrod-adjuster carried by one end of the said parallel pipes and apitman connected to the opposite end.

3. A walking beam con'iprising two parallel pipes, truss-bars below saidpipes, transverse bars connect-i1 3? the pipes and the truss-bars,vcrtically-disposed bolts securing the pipes, truss-bars and transversebars together, a plate secured to the lower face of the truss-bars bymeans of said bolts, a polish-rod-adjuster carried by one end of saidpipes, a stirrup carried by the opposite end of said pipes, and a pitmanconnected to said stirrup and adapted to rock the walking beam on thetrunnion.

4L. A walking beam comprising parallel pipes, truss-bars below saidpipes and a distance below the pipes at the center, sleeves between saidpipes and truss-bars, a plate below said truss-bars, trnnnions carriedby said plate, bolts passing upwardly through said plate, thetruss-bars, sleeves and the pipes, a polish-rod-adjuster carried by oneend of the pipes and a pitman connected to the opposite end of thepipes.

5. A walking beam comprising two parallel pipes, truss bars below saidpipes, a plate below the truss-bars, trunnions carried by said plate, apolish-rod adjuster carried by the upper face of said pipes, a plateresting upon the polish-rod adjuster, and a T-bolt passing through saidplate and having its lower end turned upwardly around the truss-bars,whereby the plate is firmly clamped upon the polislrrod adjuster.

6. A walking beam comprising two para].- lel pipes, truss-bars belowsaid, pipes, and a distance below the pipes at the center, the outer endof said pipes and truss-bars having horizontal elongated abuttingsurfaces, vertical bolts passing through the pipes and the truss-bars, atransverse plate carried by the bolts below the trussbars, the saidtrussbars having a horizontal central portion, sleeves between saidpipes and horizontal portions of the truss-bars, a plate below the saidhorizontal portion of the truss-bars, trunnions carried by said plate,bolts passing upwardly through the plate, the horizontal portion of thetruss-bars the sleeves and the pipes, transverse and obliquely arrangedbrace-bars carried by theupper ends of the bolts, nuts carried by thebolts above the brace-bars, a polish-rod adjuster carried by the outerend of said pipes at one end and a pitman connected to the opposite endof the pipes, substantially as described.

In testimony whereof I afliX my signature in presence of two witnesses.

HEZEKIAH SHANNON.

Viitnesses HERMAN H. NORTH, Moses SULLIVAN.

